const CompressionWebpackPlugin = require('compression-webpack-plugin')
const VueFilenameInjector = require('@d2-projects/vue-filename-injector')
const ThemeColorReplacer = require('webpack-theme-color-replacer')
const forElementUI = require('webpack-theme-color-replacer/forElementUI')
const cdnDependencies = require('./dependencies-cdn')
const {chain, set, each} = require('lodash')

// 拼接路径
const resolve = dir => require('path').join(__dirname, dir)

// 增加环境变量
process.env.VUE_APP_VERSION = require('./package.json').version
process.env.VUE_APP_BUILD_TIME = require('dayjs')().format('YYYY-M-D HH:mm:ss')

// 基础路径 注意发布之前要先修改这里
const publicPath = process.env.VUE_APP_PUBLIC_PATH || '/'

// 设置不参与构建的库
const externals = {}
cdnDependencies.forEach(pkg => {
    externals[pkg.name] = pkg.library
})

// 引入文件的 cdn 链接
const cdn = {
    css: cdnDependencies.map(e => e.css).filter(e => e),
    js: cdnDependencies.map(e => e.js).filter(e => e)
}

// 多页配置，默认未开启，如需要请参考 https://cli.vuejs.org/zh/config/#pages
const pages = undefined
// const pages = {
// index: './src/main.js',
// subpage: './src/subpage.js'
// }

module.exports = {
    // 根据你的实际情况更改这里
    publicPath,
    lintOnSave: true,
    devServer: {
        publicPath, // 和 publicPath 保持一致
        disableHostCheck: process.env.NODE_ENV === 'development', // 关闭 host check，方便使用 ngrok 之类的内网转发工具
        proxy: {
            '/api': {
                target: 'http://localhost:2500/ezlinker',
                pathRewrite: {
                    "^/api": ''
                },
                ws: true,
                changeOrigin: true
            }
        }
    },
    css: {
        loaderOptions: { // 设置 scss 公用变量文件
            sass: {
                prependData: '@import \'~@/assets/style/public.scss\';'
            }
        }
    },
    pages,
    configureWebpack: config => {
        const configNew = {}
        if (process.env.NODE_ENV === 'production') {
            configNew.externals = externals
            configNew.plugins = [// gzip
                new CompressionWebpackPlugin(
                    {
                        filename: '[path].gz[query]',
                        test: new RegExp('\\.(' + ['js', 'css'].join('|') + ')$'),
                        threshold: 10240,
                        minRatio: 0.8,
                        deleteOriginalAssets: false
                    }
                )]
        }
        return configNew
    },
    // 默认设置: https://github.com/vuejs/vue-cli/tree/dev/packages/%40vue/cli-service/lib/config/base.js
    chainWebpack: config => { /**
     * 添加 CDN 参数到 htmlWebpackPlugin 配置中
     * 已适配多页
     */
        const htmlPluginNames = chain(pages).keys().map(page => 'html-' + page).value()
        const targetHtmlPluginNames = htmlPluginNames.length ? htmlPluginNames : ['html']
        each(targetHtmlPluginNames, name => {
            config.plugin(name).tap(options => {
                set(options, '[0].cdn', process.env.NODE_ENV === 'production' ? cdn : [])
                return options
            })
        })

        /**
     * 删除懒加载模块的 prefetch preload，降低带宽压力
     * https://cli.vuejs.org/zh/guide/html-and-static-assets.html#prefetch
     * https://cli.vuejs.org/zh/guide/html-and-static-assets.html#preload
     * 而且预渲染时生成的 prefetch 标签是 modern 版本的，低版本浏览器是不需要的
     */
        config.plugins.delete('prefetch').delete('preload')
        // 解决 cli3 热更新失效 https://github.com/vuejs/vue-cli/issues/1559
        config.resolve.symlinks(true)
        config.plugin('theme-color-replacer').use(ThemeColorReplacer, [{
                fileName: 'css/theme-colors.[contenthash:8].css',
                matchColors: [
                    ... forElementUI.getElementUISeries(process.env.VUE_APP_ELEMENT_COLOR) // Element-ui主色系列
                ],
                externalCssFiles: ['./node_modules/element-ui/lib/theme-chalk/index.css'], // optional, String or string array. Set external css files (such as cdn css) to extract colors.
                changeSelector: forElementUI.changeSelector
            }])
        config
        // 开发环境 sourcemap 不包含列信息.when(process.env.NODE_ENV === 'development', config => config.devtool('cheap-source-map'))
        // 预览环境构建 vue-loader 添加 filename.when(process.env.VUE_APP_SCOURCE_LINK === 'TRUE', config => VueFilenameInjector(config, {propName: process.env.VUE_APP_SOURCE_VIEWER_PROP_NAME}))
        // markdown
        config.module.rule('md').test(/\.md$/).use('text-loader').loader('text-loader').end()
        // svg
        const svgRule = config.module.rule('svg')
        svgRule.uses.clear()
        svgRule.include.add(resolve('src/assets/svg-icons/icons')).end().use('svg-sprite-loader').loader('svg-sprite-loader').options({symbolId: 'd2-[name]'}).end()
        // image exclude
        const imagesRule = config.module.rule('images')
        imagesRule.test(/\.(png|jpe?g|gif|webp|svg)(\?.*)?$/).exclude.add(resolve('src/assets/svg-icons/icons')).end()
        // 重新设置 alias
        config.resolve.alias.set('@api', resolve('src/api'))
        // 分析工具
        if (process.env.npm_config_report) {
            config.plugin('webpack-bundle-analyzer').use(require('webpack-bundle-analyzer').BundleAnalyzerPlugin)
        }
    },
    // 不输出 map 文件
    productionSourceMap: false,
    // i18n
    pluginOptions: {
        i18n: {
            locale: 'zh-chs',
            fallbackLocale: 'en',
            localeDir: 'locales',
            enableInSFC: true
        }
    }
}
